Update: I was unfortunately not aware of Shamus Young's severe criticism of Fallout 3 available here to link in the original piece and I regret that. It dovetails rather nicely with what I've written and it's much better executed than my piece. I strongly recommend anyone...

Extra movie: Beat the game on Hard to get a very short clip of StarCraft 2 characters running under the WarCraft III engine. It takes place after the football sequence in the end credits.

Another extra movie: If you have beaten the game on both Normal and Hard, click 'Credits' at the Main Menu screen to see another short StarCraft 2 sequence.

Hydralisk Easter Egg: A Hydralisk can be found in the second mission in the Night Elves Campaign (Daughters of the Moon). Use the cheat iseedeadpeople to reveal the map. Then scroll to the top right...the grey dot found between some trees is the Hydralisk. It will join you in your fight.

Play As The High Elves:On chapter five of the Undead campaign, "Fall of Silvermoon", stop the runners and destroy the High Elf base on the upper region of the map. After you do this, you will be able to use the Banshee. Fight your way into the lower High Elf base, and use the Banshee's Possesion on a High Elf peasent. You can then use the peasant to build a High Elf base, allowing you to build all their units, and access all three human heroes.

Exploding critters: Keep clicking on critters to make them explode.

The Biggest Panda Ever:In the night elf campaign on level five, use the map revealing cheat to see the whole map. Towards the top left of the map there is a yellow circle of power. If you look to the left of that there is a giant panda that is level 10. It drops the item "the necklace of spell immunity"

Secret society of sasquatches: On the second level of the undead campaign, "Digging Up The Dead" there is a secret area that can be found around about the top left of the map use the iseedeadpeople cheat to see the map. after getting the remains of Kel'Thuzad when you have to build your base, take Arthas and a meat wagon and go where there are three mages and kill them. then go to the left of that and there is a group of trees you have to take down with the meat wagon afterwards follow the path and there will be a stone arch, walk through it and a cinematic will start. There are the sasquatches.